161159577 has 16 divisors (see below), whose sum is σ = 226632000. Its totient is φ = 101585664.

The previous prime is 161159549. The next prime is 161159587. The reversal of 161159577 is 775951161.

161159577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161159577 - 2¹² = 161155481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161159587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29949 + ... + 34917.

It is an arithmetic number, because the mean of its divisors is an integer number (14164500).

Almost surely, 2^161159577 is an apocalyptic number.

It is an amenable number.

161159577 is a deficient number, since it is larger than the sum of its proper divisors (65472423).

161159577 is a wasteful number, since it uses less digits than its factorization.

161159577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560.

The product of its digits is 66150, while the sum is 42.

The square root of 161159577 is about 12694.8641977770. The cubic root of 161159577 is about 544.1918578341.

The spelling of 161159577 in words is "one hundred sixty-one million, one hundred fifty-nine thousand, five hundred seventy-seven".